US20080001015A1 - Capstan - Google Patents
Capstan Download PDFInfo
- Publication number
- US20080001015A1 US20080001015A1 US11/670,520 US67052007A US2008001015A1 US 20080001015 A1 US20080001015 A1 US 20080001015A1 US 67052007 A US67052007 A US 67052007A US 2008001015 A1 US2008001015 A1 US 2008001015A1
- Authority
- US
- United States
- Prior art keywords
- bolt
- cable
- capstan
- reel
- rocker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/04—Driving gear manually operated
Definitions
- the present invention relates to a capstan and, more particularly, to a capstan equipped with a stress indicator.
- Capstans are used to reel cables or chains. However, no capstan is equipped with a stress indicator to the best understanding of the applicant of the present application. Therefore, the stress in the cables or chains cannot be monitored. Should the stress exceed the designed limits of the cables or chains, the cables or chains would very likely be broken. The broken cables or chains inevitably entail the loss of property. What is worse, the broken cables or chains might cause casualty like whips.
- the present invention is intended to obviate or at least alleviate the problems encountered in prior art.
- a capstan includes a frame, a reel for reeling a cable and a bolt for supporting the reel on the frame.
- the stress in the cable gets larger as the strain in the bolt gets larger.
- a driving device is operable to rotate the reel on the bolt.
- a strain gauge is attached to the bolt for measuring the strain in the bolt.
- a control box calculates the stress in the cable based on the strain in the bolt.
- a display shows the stress in the cable under the control of the control box.
- An advantage of the capstan according to the present invention is the security of property.
- An advantage of the capstan according to the present invention is the safety of users.
- FIG. 1 is a perspective view of a capstan according to the preferred embodiment of the present invention.
- FIG. 2 is an exploded view of the capstan shown in FIG. 1 ;
- FIG. 3 is a right side view of the capstan shown in FIG. 1 ;
- FIG. 4 is a perspective view of a cable wound on the capstan shown in FIG. 1 ;
- FIG. 5 is a front view of the cable and capstan shown in FIG. 4 ;
- FIG. 6 is a front view of the cable and capstan in another position than shown in FIG. 5 .
- a capstan 10 includes a frame 20 , a reel 40 , a driving device 30 , a shaft 50 and a stress indicator 60 .
- the frame 20 is a U-shaped element including a first wall 21 , a second wall 22 and a floor on which the walls 21 and 22 are formed.
- An aperture 211 is defined in the first wall 21 corresponding to an aperture 221 defined in the second wall 22 .
- the reel 40 includes a first disc 41 , a second disc 42 and a tube 43 between the discs 41 and 42 .
- a gear 411 is formed on the first disc 41 .
- the gear 411 is formed with teeth 412 .
- An aperture 421 is defined in the second disc 42 .
- a plate 423 is attached to the second disc 42 by two threaded bolts 422 engaged with two nuts 424 .
- a tunnel 431 is defined in the tube 43 .
- a bolt 50 is inserted in the apertures 211 and 221 and the tunnel 431 so that the reel 40 is rotationally disposed on the frame 20 .
- the bolt 50 is formed with a head 51 at an end and a thread 52 at an opposite end.
- the thread 52 of the bolt 50 is engaged with the thread of a nut 53 .
- a cable 70 is wound on the reel 40 .
- An end of the cable 70 is inserted through the aperture 421 and pressed against the second disc 42 by the plate 423 .
- the driving device 30 includes a shaft 31 formed with a head 34 .
- the shaft 31 is inserted through the walls 21 and 22 .
- a pinion 32 is disposed on the shaft 31 and engaged with the gear 411 .
- a rocker 33 includes a collar at an end and a grip at an opposite end. The collar of the rocker 33 is moved on the shaft 31 between an active position and a neutral position. In the active position, the collar of the rocker 33 can rotate the shaft 31 . In the neutral position, the collar of the rocker 33 cannot rotate the shaft 31 .
- a washer 36 is disposed against the head 34 . An elastic element 35 is compressed between the washer 36 and the collar of the rocker 33 for pushing the collar of the rocker 33 to the active position.
- the stress indicator 60 includes a strain gauge 62 , a control box 61 and a display 611 .
- the strain gauge 62 is attached to the bolt 50 .
- the control box 61 is attached to the second wall 22 .
- the display 611 is attached to the box 61 .
- the control box 61 contains electronic elements electrically connected to the strain gauge 62 on one hand and electrically connected to the display 611 on the other hand.
- the stress in the cable 70 gets larger as the strain in the bolt 50 gets larger.
- the strain gauge 62 detects strain in the bolt 50 and notifies the control box 61 of the same. Based on the strain in the bolt 50 , the control box 61 calculates the stress in the cable 70 .
- the control box 61 instructs the display 611 to display the stress in the cable 70 .
- a user can maneuver the rocker 33 to reel in the cable 70 while monitoring the stress in the cable 70 on the display 611 . The user can decide to stop or continue.
- the capstan 10 enables the user to know the stress in the cable 70 for including the strain gauge 62 and the display 611 . Moreover, the capstan 10 enables the user to easily monitor the stress in the cable 70 while reeling in the cable 70 since the display 611 and the rocker 33 are on the same side. The user can stop maneuvering the rocker 33 and prevent the rapture of the cable 70 before the stress in the cable 70 reaches its limit. Therefore, the capstan 10 exhibits at least two advantages. Firstly, property is secured. Secondly, the safety of the user is ensured.
Abstract
A capstan includes a frame, a reel for reeling a cable and a bolt for supporting the reel on the frame. The stress in the cable gets larger as the strain in the bolt gets larger. A driving device is operable to rotate the reel on the bolt. A strain gauge is attached to the bolt for measuring the strain in the bolt. A control box calculates the stress in the cable based on the strain in the bolt. A display shows the stress in the cable under the control of the control box.
Description
- 1. Field of Invention
- The present invention relates to a capstan and, more particularly, to a capstan equipped with a stress indicator.
- 2. Related Prior Art
- Capstans are used to reel cables or chains. However, no capstan is equipped with a stress indicator to the best understanding of the applicant of the present application. Therefore, the stress in the cables or chains cannot be monitored. Should the stress exceed the designed limits of the cables or chains, the cables or chains would very likely be broken. The broken cables or chains inevitably entail the loss of property. What is worse, the broken cables or chains might cause casualty like whips.
- Therefore, the present invention is intended to obviate or at least alleviate the problems encountered in prior art.
- According to the present invention, a capstan includes a frame, a reel for reeling a cable and a bolt for supporting the reel on the frame. The stress in the cable gets larger as the strain in the bolt gets larger. A driving device is operable to rotate the reel on the bolt. A strain gauge is attached to the bolt for measuring the strain in the bolt. A control box calculates the stress in the cable based on the strain in the bolt. A display shows the stress in the cable under the control of the control box.
- An advantage of the capstan according to the present invention is the security of property.
- An advantage of the capstan according to the present invention is the safety of users.
- Other advantages and features of the present invention will become apparent from the following description referring to the drawings.
- The present invention will be described via detailed illustration of the preferred embodiment referring to the drawings wherein:
-
FIG. 1 is a perspective view of a capstan according to the preferred embodiment of the present invention; -
FIG. 2 is an exploded view of the capstan shown inFIG. 1 ; -
FIG. 3 is a right side view of the capstan shown inFIG. 1 ; -
FIG. 4 is a perspective view of a cable wound on the capstan shown inFIG. 1 ; -
FIG. 5 is a front view of the cable and capstan shown inFIG. 4 ; and -
FIG. 6 is a front view of the cable and capstan in another position than shown inFIG. 5 . - Referring to
FIGS. 1 and 2 , according to the preferred embodiment of the present invention, acapstan 10 includes aframe 20, areel 40, adriving device 30, ashaft 50 and astress indicator 60. - The
frame 20 is a U-shaped element including afirst wall 21, asecond wall 22 and a floor on which thewalls aperture 211 is defined in thefirst wall 21 corresponding to anaperture 221 defined in thesecond wall 22. - The
reel 40 includes afirst disc 41, asecond disc 42 and atube 43 between thediscs gear 411 is formed on thefirst disc 41. Thegear 411 is formed withteeth 412. Anaperture 421 is defined in thesecond disc 42. Aplate 423 is attached to thesecond disc 42 by two threadedbolts 422 engaged with twonuts 424. Atunnel 431 is defined in thetube 43. - Referring to
FIG. 3 , abolt 50 is inserted in theapertures tunnel 431 so that thereel 40 is rotationally disposed on theframe 20. Thebolt 50 is formed with ahead 51 at an end and athread 52 at an opposite end. Thethread 52 of thebolt 50 is engaged with the thread of anut 53. - Referring to
FIG. 4 , acable 70 is wound on thereel 40. An end of thecable 70 is inserted through theaperture 421 and pressed against thesecond disc 42 by theplate 423. - The
driving device 30 includes ashaft 31 formed with ahead 34. Theshaft 31 is inserted through thewalls pinion 32 is disposed on theshaft 31 and engaged with thegear 411. Arocker 33 includes a collar at an end and a grip at an opposite end. The collar of therocker 33 is moved on theshaft 31 between an active position and a neutral position. In the active position, the collar of therocker 33 can rotate theshaft 31. In the neutral position, the collar of therocker 33 cannot rotate theshaft 31. Awasher 36 is disposed against thehead 34. Anelastic element 35 is compressed between thewasher 36 and the collar of therocker 33 for pushing the collar of therocker 33 to the active position. - Referring to
FIG. 6 , by operating therocker 33 in a direction, theshaft 31 is rotated in the same direction. Thereel 40 is rotated in an opposite direction due to the engagement of thegear 411 with thepinion 32. - The
stress indicator 60 includes astrain gauge 62, acontrol box 61 and adisplay 611. Thestrain gauge 62 is attached to thebolt 50. Thecontrol box 61 is attached to thesecond wall 22. Thedisplay 611 is attached to thebox 61. Thecontrol box 61 contains electronic elements electrically connected to thestrain gauge 62 on one hand and electrically connected to thedisplay 611 on the other hand. - Referring to
FIG. 5 , the stress in thecable 70 gets larger as the strain in thebolt 50 gets larger. Thestrain gauge 62 detects strain in thebolt 50 and notifies thecontrol box 61 of the same. Based on the strain in thebolt 50, thecontrol box 61 calculates the stress in thecable 70. Thecontrol box 61 instructs thedisplay 611 to display the stress in thecable 70. A user can maneuver therocker 33 to reel in thecable 70 while monitoring the stress in thecable 70 on thedisplay 611. The user can decide to stop or continue. - The
capstan 10 enables the user to know the stress in thecable 70 for including thestrain gauge 62 and thedisplay 611. Moreover, thecapstan 10 enables the user to easily monitor the stress in thecable 70 while reeling in thecable 70 since thedisplay 611 and therocker 33 are on the same side. The user can stop maneuvering therocker 33 and prevent the rapture of thecable 70 before the stress in thecable 70 reaches its limit. Therefore, thecapstan 10 exhibits at least two advantages. Firstly, property is secured. Secondly, the safety of the user is ensured. - The present invention has been described via the detailed illustration of the preferred embodiment. Those skilled in the art can derive variations from the preferred embodiment without departing from the scope of the present invention. Therefore, the preferred embodiment shall not limit the scope of the present invention defined in the claims.
Claims (12)
1. A capstan comprising:
a frame;
a reel for reeling a cable;
a bolt for supporting the reel on the frame so that the stress in the cable gets larger as the strain in the bolt gets larger;
a driving device maneuverable to rotate the reel on the bolt;
a strain gauge attached to the bolt for measuring the strain in the bolt;
a control box for calculating the stress in the cable based on the strain in the bolt; and
a display for showing the stress in the cable under the control of the control box.
2. The capstan according to claim 1 wherein the frame is a U-shaped element.
3. The capstan according to claim 1 wherein the reel is formed with a gear, and the driving device comprises a shaft rotationally disposed on the frame, a pinion secured to the shaft and engaged with the gear and a rocker maneuverable for rotating the shaft.
4. The capstan according to claim 3 wherein the rocker is movable between an active position for driving the shaft and a neutral position for releasing the shaft.
5. The capstan according to claim 4 wherein the driving device comprises an elastic element for pushing the rocker to the active position.
6. The capstan according to claim 5 wherein the shaft is formed with a head so that the elastic element is compressed between the rocker and the head.
7. The capstan according to claim 6 wherein the driving device comprises a washer located between the elastic element and the head.
8. The capstan according to claim 1 wherein the reel comprise two discs and a tube between the discs.
9. The capstan according to claim 1 wherein one of the discs defines an aperture through which an end of the cable is inserted.
10. The capstan according to claim 9 comprising a plate for pressing the end of the cable against the disc.
11. The capstan according to claim 10 comprising threaded bolts and nuts engaged with the threaded bolts for pressing the plate against the disc.
12. The capstan according to claim 3 wherein the rocker and the display are disposed on a same side of the frame so that a user can observe the while maneuvering the rocker.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW95121293 | 2006-06-14 | ||
TW095121293A TW200800785A (en) | 2006-06-14 | 2006-06-14 | Capstans with tension display apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080001015A1 true US20080001015A1 (en) | 2008-01-03 |
Family
ID=38875584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/670,520 Abandoned US20080001015A1 (en) | 2006-06-14 | 2007-02-02 | Capstan |
Country Status (2)
Country | Link |
---|---|
US (1) | US20080001015A1 (en) |
TW (1) | TW200800785A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111504538A (en) * | 2020-05-14 | 2020-08-07 | 东风汽车股份有限公司 | Method for measuring tight edge tension of engine timing chain |
Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2414169A (en) * | 1945-01-05 | 1947-01-14 | Raymond Henry | Rope server |
US2684833A (en) * | 1952-02-18 | 1954-07-27 | Jesse M Benson | Safety winch |
US2846162A (en) * | 1955-09-12 | 1958-08-05 | Int Harvester Co | Cable drum |
US3330154A (en) * | 1965-01-12 | 1967-07-11 | Sigma Systems Corp | Apparatus for measuring the resultant load on a stationary shaft |
US3652027A (en) * | 1970-10-08 | 1972-03-28 | Yit Chen Wong | Kite reel |
US3699809A (en) * | 1970-04-16 | 1972-10-24 | Tsudakoma Ind Co Ltd | Apparatus for detecting the tension of yarns delivered from a rotary yarn beam |
US3934852A (en) * | 1975-08-11 | 1976-01-27 | Wesbar Corporation | Trailer tongue jack |
US4048547A (en) * | 1973-05-30 | 1977-09-13 | Brissonneau Et Lotz | Torque responsive device |
US4095660A (en) * | 1975-09-18 | 1978-06-20 | Kurt Eilert Johansson | Roller |
US4717086A (en) * | 1986-08-28 | 1988-01-05 | Crow John Q | Spool rewinder |
US4823606A (en) * | 1988-06-23 | 1989-04-25 | Carron & Company | Diaphragm transducer for sensing loading |
US5002259A (en) * | 1987-12-22 | 1991-03-26 | Helper Winch, Inc. | Power winch system |
US5365797A (en) * | 1994-01-07 | 1994-11-22 | Mccrory Iii Claud O | Device for measuring the amount of force applied to a cable |
US5560560A (en) * | 1993-10-07 | 1996-10-01 | Daiwa Seiko, Inc. | Fishline tension measuring device for fishing reel |
US5606849A (en) * | 1995-07-05 | 1997-03-04 | Bettenhausen; Roger V. | Apparatus for wrapping a package |
US6041676A (en) * | 1995-07-05 | 2000-03-28 | Bettenhausen; Roger V. | Winch with locking mechanism |
US6135685A (en) * | 1997-11-13 | 2000-10-24 | Indiana Mills & Manufacturing, Inc. | Web retractor with release lever and tightening handle |
US6558092B1 (en) * | 1999-08-05 | 2003-05-06 | Rollin Woodruff | Winch system |
US20040037664A1 (en) * | 1999-08-05 | 2004-02-26 | Rollin Woodruff | Winch system |
US20050211812A1 (en) * | 2004-03-25 | 2005-09-29 | Shimano Inc. | Fishing reel, fishing informatiom display apparatus, and fishing information display system |
US20050278902A1 (en) * | 2004-06-22 | 2005-12-22 | Michael Wilcox | Strap-tensioning device with tension indicator |
US20070017295A1 (en) * | 2005-07-19 | 2007-01-25 | Hiroyuki Ohta | Bolt with function of measuring strain |
US7219396B2 (en) * | 2005-06-14 | 2007-05-22 | Chih-Ching Hsieh | Belt tightening device with display for displaying tension |
US7249753B2 (en) * | 2002-08-07 | 2007-07-31 | Gustav Adolf Glatz | Winch, particularly for driving an umbrella |
US20090084883A1 (en) * | 2007-09-28 | 2009-04-02 | D B Industries, Inc. | Retrieval Assembly |
US7618021B2 (en) * | 2006-04-26 | 2009-11-17 | Ancra International, Llc. | Ratchet cap for winch |
-
2006
- 2006-06-14 TW TW095121293A patent/TW200800785A/en unknown
-
2007
- 2007-02-02 US US11/670,520 patent/US20080001015A1/en not_active Abandoned
Patent Citations (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2414169A (en) * | 1945-01-05 | 1947-01-14 | Raymond Henry | Rope server |
US2684833A (en) * | 1952-02-18 | 1954-07-27 | Jesse M Benson | Safety winch |
US2846162A (en) * | 1955-09-12 | 1958-08-05 | Int Harvester Co | Cable drum |
US3330154A (en) * | 1965-01-12 | 1967-07-11 | Sigma Systems Corp | Apparatus for measuring the resultant load on a stationary shaft |
US3699809A (en) * | 1970-04-16 | 1972-10-24 | Tsudakoma Ind Co Ltd | Apparatus for detecting the tension of yarns delivered from a rotary yarn beam |
US3652027A (en) * | 1970-10-08 | 1972-03-28 | Yit Chen Wong | Kite reel |
US4048547A (en) * | 1973-05-30 | 1977-09-13 | Brissonneau Et Lotz | Torque responsive device |
US3934852A (en) * | 1975-08-11 | 1976-01-27 | Wesbar Corporation | Trailer tongue jack |
US4095660A (en) * | 1975-09-18 | 1978-06-20 | Kurt Eilert Johansson | Roller |
US4717086A (en) * | 1986-08-28 | 1988-01-05 | Crow John Q | Spool rewinder |
US5002259A (en) * | 1987-12-22 | 1991-03-26 | Helper Winch, Inc. | Power winch system |
US4823606A (en) * | 1988-06-23 | 1989-04-25 | Carron & Company | Diaphragm transducer for sensing loading |
US5560560A (en) * | 1993-10-07 | 1996-10-01 | Daiwa Seiko, Inc. | Fishline tension measuring device for fishing reel |
US5365797A (en) * | 1994-01-07 | 1994-11-22 | Mccrory Iii Claud O | Device for measuring the amount of force applied to a cable |
US5606849A (en) * | 1995-07-05 | 1997-03-04 | Bettenhausen; Roger V. | Apparatus for wrapping a package |
US6041676A (en) * | 1995-07-05 | 2000-03-28 | Bettenhausen; Roger V. | Winch with locking mechanism |
US6135685A (en) * | 1997-11-13 | 2000-10-24 | Indiana Mills & Manufacturing, Inc. | Web retractor with release lever and tightening handle |
US6558092B1 (en) * | 1999-08-05 | 2003-05-06 | Rollin Woodruff | Winch system |
US20040037664A1 (en) * | 1999-08-05 | 2004-02-26 | Rollin Woodruff | Winch system |
US6960053B2 (en) * | 1999-08-05 | 2005-11-01 | Rollin Woodruff | Winch system |
US20060133905A1 (en) * | 1999-08-05 | 2006-06-22 | Rollin Woodruff | Winch system |
US7249753B2 (en) * | 2002-08-07 | 2007-07-31 | Gustav Adolf Glatz | Winch, particularly for driving an umbrella |
US20050211812A1 (en) * | 2004-03-25 | 2005-09-29 | Shimano Inc. | Fishing reel, fishing informatiom display apparatus, and fishing information display system |
US20050278902A1 (en) * | 2004-06-22 | 2005-12-22 | Michael Wilcox | Strap-tensioning device with tension indicator |
US7219396B2 (en) * | 2005-06-14 | 2007-05-22 | Chih-Ching Hsieh | Belt tightening device with display for displaying tension |
US20070017295A1 (en) * | 2005-07-19 | 2007-01-25 | Hiroyuki Ohta | Bolt with function of measuring strain |
US7618021B2 (en) * | 2006-04-26 | 2009-11-17 | Ancra International, Llc. | Ratchet cap for winch |
US20090084883A1 (en) * | 2007-09-28 | 2009-04-02 | D B Industries, Inc. | Retrieval Assembly |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111504538A (en) * | 2020-05-14 | 2020-08-07 | 东风汽车股份有限公司 | Method for measuring tight edge tension of engine timing chain |
Also Published As
Publication number | Publication date |
---|---|
TW200800785A (en) | 2008-01-01 |
TWI323241B (en) | 2010-04-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |